Scatterer size estimation using the center frequency assessed from ultrasound time domain data
(2016) In Journal of the Acoustical Society of America 140(4). p.2352-2357- Abstract
Scatterer size estimation is useful when characterizing tissue using ultrasound. In all previous studies on scatterer size, the estimations are performed in the frequency domain and are thus subjected to a trade off in time-frequency resolution. This study focused on the feasibility of estimating scatterer size in the time domain using only the ultrasound center frequency, assuming a Gaussian-shaped pulse. A model for frequency normalization was derived and the frequency-dependent attenuation was compensated. Five phantoms with well-defined sizes of spherical glass beads were made and scanned with two different linear array transducers with variable center frequencies. A strong correlation (r = 0.99, p < 10-19) between the... (More)
Scatterer size estimation is useful when characterizing tissue using ultrasound. In all previous studies on scatterer size, the estimations are performed in the frequency domain and are thus subjected to a trade off in time-frequency resolution. This study focused on the feasibility of estimating scatterer size in the time domain using only the ultrasound center frequency, assuming a Gaussian-shaped pulse. A model for frequency normalization was derived and the frequency-dependent attenuation was compensated. Five phantoms with well-defined sizes of spherical glass beads were made and scanned with two different linear array transducers with variable center frequencies. A strong correlation (r = 0.99, p < 10-19) between the backscattered center frequency and the product between the wave number and scatterer radius was demonstrated. On average the scatterer diameter was underestimated by 6% ± 24%. These results suggest that estimation of scatterer size is possible using only the center frequency assessed in the time domain.
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- author
- Erlöv, Tobias LU ; Jansson, Tomas LU ; Persson, Hans W. LU and Cinthio, Magnus LU
- organization
- publishing date
- 2016-10-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the Acoustical Society of America
- volume
- 140
- issue
- 4
- pages
- 6 pages
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- scopus:84990856253
- pmid:27794324
- wos:000387260600026
- ISSN
- 0001-4966
- DOI
- 10.1121/1.4964107
- language
- English
- LU publication?
- yes
- id
- 58d2d0b4-f4c0-4046-863e-a76372709324
- date added to LUP
- 2016-11-16 11:04:52
- date last changed
- 2024-01-19 13:15:22
@article{58d2d0b4-f4c0-4046-863e-a76372709324, abstract = {{<p>Scatterer size estimation is useful when characterizing tissue using ultrasound. In all previous studies on scatterer size, the estimations are performed in the frequency domain and are thus subjected to a trade off in time-frequency resolution. This study focused on the feasibility of estimating scatterer size in the time domain using only the ultrasound center frequency, assuming a Gaussian-shaped pulse. A model for frequency normalization was derived and the frequency-dependent attenuation was compensated. Five phantoms with well-defined sizes of spherical glass beads were made and scanned with two different linear array transducers with variable center frequencies. A strong correlation (r = 0.99, p < 10<sup>-19</sup>) between the backscattered center frequency and the product between the wave number and scatterer radius was demonstrated. On average the scatterer diameter was underestimated by 6% ± 24%. These results suggest that estimation of scatterer size is possible using only the center frequency assessed in the time domain.</p>}}, author = {{Erlöv, Tobias and Jansson, Tomas and Persson, Hans W. and Cinthio, Magnus}}, issn = {{0001-4966}}, language = {{eng}}, month = {{10}}, number = {{4}}, pages = {{2352--2357}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Journal of the Acoustical Society of America}}, title = {{Scatterer size estimation using the center frequency assessed from ultrasound time domain data}}, url = {{http://dx.doi.org/10.1121/1.4964107}}, doi = {{10.1121/1.4964107}}, volume = {{140}}, year = {{2016}}, }